Material preview problem

[radiosity80]

Hello everyone, I lost the material preview in the material editor.
sorry for my poor language
Thank you

[jacksc02]

make sure your material editor is set to use Vray under "assign renderer"

[Morne]

this sometimes happens to me then all I do is set material library to display 5X3 Sample balls and switch back to 6X4 Samples (3X2 in your case) and then all is fine. You do this by right-clicking on any "ball" sample and from the list select a different sample window at the bottom and then just switch back again

[radiosity80]

I've tried, but not works ...is a big problem
Thank you

[beestee]

Make sure your vray license is still active. Easiest way is to open render settings and click on VRay tab, you should be able to quickly tell if something isn't right.

If the computer that handles your license restarted recently, the license service may just have had trouble reconnecting or restarting properly.

EDIT: Hmm...just looked a little closer at the screengrab and it does appear that the license is working fine. I would double check anyways.

[radiosity80]

Hello everyone, I have solved the problem.
I saved the geometries select, and then I imported into a new session of max...the material preview it's ok.
Thank you
sorry for my poor language